Stove-door.



A, M. GUMMERQ STOVE DOOR.

APPLICATION FILED 11111.20, 1911.

Patented July 11, 1911.

NI D STATES PATENT OFFICE. Y

Answer 11'. comm-m, or DAYTON, orno, AssIeNon rornn GEM CITY s'rovn comrAnY, or DAYTON, care, A CORPORATION.

'srrovn-noon.

Specification of Letters Patent.

Application filed Ianuary20, 1911. Serial No. 603,641.

such as, will enable others skilled in the art, 10,to which it-appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of, this specification.

This invention relates to new and useful improvements in -mean's for balancing the oven doors of stoves. Or to define the invention in other language, it consists in the employ'me'ntof a compression spring'to counterbalance the weight of the oven door in opening the same, thereby preventing the door from dropping under its own weight if released by the hand.

The object of the invention is to so utilize a coil spring that in the event of the breakage of the spring at any point of its/length, the effectiveness thereof will not be destroyed.

Referring to the accompanying drawings,

Figure 1 is a transverse vertical sectional elevation of the lower portion of a cook stove. The line of the section is immediately in advance of the front wall of the oven and on one side of one of the oven door hinges.

5 Fig. 2 is an elevation of one of the lower corners of the oven door, showing one of the pivot members and the lug thereof. Fig. 3 is a detail sectional view on the line a a of Fig. 1.

In the following description and in the drawings, similar "reference characters indicate the same parts.

1 designates the lower portion of the frame of a well known form of cook stove,

1 one of the walls thereof, and 2 the usual oven door. -The lower portion of said door at the corners is provided with pivot members 3 forming hinges in connection with lugs 4 upon which said pivots rest. 5 designates a housing secured to the door over each pivot and serving to maintain said pivots in place. The housings 5, one of which is shown in the drawings, are provided with stops 6 which serve to arrest the downward movement of the door when the latter is opened zontal position and may conveniently serve as a shelf. To resist the weight of the door when the same is being opened, and to overcome the resistance of the door due to its weight, in closing. said door, as well as to provide means for maintaining the door at any point of a partial opening, I provide the following devices: One of the pivot or hinge members 3 is provided with a rigid crank-6, the upper end of which terminates in a hook. The pivot or hinge 3 in this case is the one nearest the front of the stove, the other pivot or hinge may, however, be utilized for the same purpose. Engaging the hook of said crank 6 is a rod ,7. The end of said rod so engaging said hook is preferably flattened and provided with an eye which receives the hook. The other end ofsaid rod 7 is likew1se provided with an eye which receives the upper recessed end of a'lever 8 pivoted upon a lug 10 extending from the wall 1 and held therein by a screw 9. The lower end of the lever 8 is suitably curved to connect with the eye of a second rod 11, which lies below and parallel with the rod 7, which we have seen forms a connection between the oven door and the lever 8. The rod 11 passes freely through a stationary guide 12 which supports said rod in a horizontal position as I to its limit. When the door isin engage I ment with the stops 6*, it occupies a horishown. The free end of the rod ll'is provided with a head or enlargement which may consist of one or more nuts 13. Mounted upon the said rod and inclosed between the guide 12 and the head 13,-is a coil spring 14 which is normally expanded. From what has been said and from the drawings, it will be seen that the spring 14 is instrumental in holding the door closed while in its normal condition, and that when the door is opened, the spring is compressed in proportion to the extentof the door opening, and will at all times serve to counterbalance the weight of the door and will hold it at any point of that such spring will break, and once broken, it becomes totally useless for the purposes intended. It is not so with a spring which is so mounted and. associated with other cooperating elements that it performs its use ful functions while compressing. If such spring should become broken from the causes above specified, the coils, though disconnected, would be held in place upon the rod 11 and between the guide 12 and the head 13. The effective length of the spring would not be materially affected nor would its original function be interfered with.

Having described my invention, I claim:

1. In a stove, the combination'with the frame of said stove, and a door hinged thereto having a crankmember, a lever pivoted to the stove frame, connecting rods pivoted to said lever, one of which connects with said crank member andthe other of which is provided with a head, a stop forming a support for the last named rod, and a compression spring mounted on the last named rod between the head thereof and said stop, whereby the said spring is subjected to compression through the movement of the last named rod when said door is opened, substantially as specified.

2. In a stove, the combination with an oven door having a crank arm extended therefrom, of a lever pivoted to a suitable part of the stove, a rod provided with a head orenlargement connected with said lever, a

support for said rod, a spring mounted on said rod between thehead thereof and said support, and adapted to be compressed through a movement of said rod, and another rod' forming a' connection'between said lever and the crank-arm onthe door, substantially as specified.

3. The combination with a stove having an oven door provided With a crank 6, of a lever 8 fulcrumed on the frame of said stove, a rod 7 connecting the upper end of said lever with said crank, a compression spring 14, a fixed member 12 inclosing one end of said spring, and a rod 11 having a head or enlargement 13 inclosing the other end of said spring, said last named rod being con- Eegted with said lever, substantially as speci- In testimon whereof I afiix my signature,

in presence 0 two witnesses.

AUGUST M. GUMMER. 

